Home / 92,913.27-128,231.06-87,213.09

Finding the Fourth Proportional to 92,913.27, 128,231.06 and 87,213.09

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Solution

The fourth proportional to 92,913.27, 128,231.06 and 87,213.09 is: 120,364.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,913.27 : 128,231.06 = 87,213.09 : x
  2. Step 2: Convert to fraction form
    92,913.27/128,231.06 = 87,213.09/x
  3. Step 3: Cross multiply
    92,913.27x = 128,231.06 × 87,213.09
  4. Step 4: Simplify right side
    92,913.27x = 11,183,426,976.58
  5. Step 5: Solve for x
    x = 11,183,426,976.58/92,913.27
  6. Step 6: Final answer
    x = 120,364.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.